Free developer tool
UUID generator
Generate v4 UUIDs locally with the browser's cryptographic random source.
Last updated October 31, 2026
How it runs
This tool runs entirely in your browser. Your input is not uploaded or stored.
Developer · runs in your browser
free · no accountFAQs
Are the UUIDs random?+
Yes. They use crypto.randomUUID or crypto.getRandomValues.
Are they sent to a server?+
No. Generation happens in your browser.
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